{
  "protocol": {
    "name": "CVP",
    "version": "1.0.0-proposed",
    "revision": "2026-09-13",
    "spec_sha256": "f62725968356c92930531cd6085db76e216da06e95be53d636b0d2cf3218b148",
    "spec": "https://www.calculatorx.com/developers/cvp/spec/1.0"
  },
  "document_status": "proposed",
  "calculator": {
    "id": "dbm-watt",
    "version": "1.3.1",
    "title": "dBm ↔ Watts Converter",
    "formula_family": "dbm_watts",
    "capability_id": "units.rf.dbm_watts",
    "verification_revision": "2026-09-13.overflow-ssr-rollout"
  },
  "profile": "engineering",
  "status": "VERIFIED",
  "verification_status": "VERIFIED",
  "production_freshness": "CURRENT",
  "overall_trust": "VERIFIED",
  "runner": {
    "name": "cvp-runner",
    "version": "1.0.0"
  },
  "environment": {
    "runtime": "node",
    "runtime_version": "22.23.2",
    "numeric_model": "IEEE-754 binary64",
    "os": "linux"
  },
  "suite": {
    "id": "dbm-watt",
    "version": "1.3.1",
    "uri": "https://www.calculatorx.com/evidence/units.rf.dbm_watts/1.3.1.json",
    "verification_revision": "2026-09-13.overflow-ssr-rollout"
  },
  "obligation_set": [
    "CVP-PROV-01",
    "CVP-MODEL-01",
    "CVP-SCOPE-01",
    "CVP-UNIT-01",
    "CVP-REF-01",
    "CVP-GOLD-01",
    "CVP-BND-01",
    "CVP-INV-01",
    "CVP-NUM-01",
    "CVP-COV-01",
    "CVP-CONTRACT-01",
    "CVP-DEP-01",
    "CVP-ART-01",
    "CVP-PROD-01",
    "CVP-DIM-01",
    "CVP-PROP-01",
    "CVP-META-01",
    "CVP-ROUND-01",
    "CVP-IFACE-01"
  ],
  "provenance": {
    "mode": "direct",
    "sources": [
      {
        "label": "NIST Technical Note 1850",
        "kind": "standard",
        "reference": "Appendix B — dBm ↔ milliwatt",
        "url": "https://nvlpubs.nist.gov/nistpubs/TechnicalNotes/NIST.TN.1850.pdf"
      },
      {
        "label": "ITU / RF practice — dBm",
        "kind": "standard",
        "reference": "0 dBm = 1 mW"
      }
    ]
  },
  "reference": {
    "items": [
      {
        "class": "O1",
        "reference_scope": "model",
        "scope": "model",
        "label": "dBm ↔ watt / milliwatt (NIST TN 1850 Appendix B)"
      },
      {
        "class": "O2",
        "reference_scope": "expected_values",
        "scope": "expected_values",
        "label": "Separate-module dBm↔W oracle — same V8 binary64 as IUT",
        "engine": {
          "name": "dbm-watt-reference",
          "precision_bits": 53,
          "independent_of_iut": true
        }
      },
      {
        "class": "O2",
        "reference_scope": "numerical_behavior",
        "scope": "numerical_behavior",
        "label": "Same O2 module backs ≤2 ULP scalar comparison vs IUT",
        "engine": {
          "name": "dbm-watt-reference",
          "precision_bits": 53,
          "independent_of_iut": true
        }
      }
    ],
    "notes": "Golden expected values use a separate O2 module (not IUT transcription). O2 shares Node/V8 binary64 with the IUT unless noted otherwise."
  },
  "controls": {
    "CVP-PROV-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "Sources present on evidence"
    },
    "CVP-MODEL-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "P_W=10^((dBm−30)/10); P_mW=10^(dBm/10). Inverse logs require power > 0. IEEE-754 binary64 representable range applies (NUMERIC_OVERFLOW / NUMERIC_UNDERFLOW)."
    },
    "CVP-SCOPE-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "RF power unit conversion (dBm ↔ W and dBm ↔ mW). Not a dBW / dBµV converter."
    },
    "CVP-UNIT-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "dBm, W, mW"
    },
    "CVP-REF-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "O1 NIST TN 1850 Appendix B + O2 separate-module oracle (same V8 binary64 as IUT)"
    },
    "CVP-GOLD-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "9/9 legacy golden; 6/6 oracle-backed numeric"
    },
    "CVP-BND-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "6/6 numeric-edge Evidence + 2/2 near-singularity numeric; illegal enum/system is Invalid only"
    },
    "CVP-INV-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "7 Evidence illegal-input + 7/7 oracle-backed error-code (exact_error_match, not ULP)"
    },
    "CVP-NUM-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "P_W=10^((dBm−30)/10); ≤2 ULP vs O2 on non-integer and negative dBm as well as decade anchors. Declared a priori."
    },
    "CVP-COV-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "5/5 declared partitions (dbm-w, w-dbm, dbm-mw, mw-dbm, invalid-domain). Non-integer and negative dBm included. binary64 overflow/underflow covered."
    },
    "CVP-CONTRACT-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "4/4 CVP contract"
    },
    "CVP-DEP-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "engine dbm-watt; Node binary64"
    },
    "CVP-ART-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "release_integrity.status=verified · digests: artifact_evidence_sha256=Evidence core (Trust freshness) · cvp_evidence_digest=artifacts.evidence_digest (fingerprint v2) · evidence_bundle_sha256=legacy Evidence JSON bytes · evidence_catalog_digest=attested_catalog_sha256 · production_sha256=bound production report · see artifacts.digest_registry"
    },
    "CVP-PROD-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "this calculator CURRENT · bound snapshot pass @ 2026-09-13T11:35:00.166Z · live site-wide report stale @ 2026-09-13T11:35:04.309Z (1 other capabilities) · local checks pass · attestation_id=c4df4bb073bf87955dccfbc9399f558b5ac157599dcc2ffa7f03224ca402fd8f · This calculator CURRENT · This calculator is not affected · Bound attestation PASS @ 2026-09-13T11:35:00.166Z · Current site report STALE (1 capability; 155 remain CURRENT) @ 2026-09-13T11:35:04.309Z · Public schema 1.3.1 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓ · schema_const=1.3.1 · report output-const=pass · evidence-sha256=pass · semantic-contract=pass · capability-html-public-origin-agree=pass · cvp-manifest-public-origin-agree=pass · cvp-latest-alias-agrees=pass · cvp-immutable-manifest-fetch=pass · cvp-immutable-manifest-sha256=pass · cvp-latest-alias-matches-immutable=pass · calculator-html-cvp-projection=pass · evidence-html-cvp-projection=pass · attested_evidence_sha256=d8679f20af3506f0d939fc41f759265265a940cac3effc1332876304e1ad2bc0 · verified_at=2026-09-13T01:52:36.557Z · evidence_attested_at=2026-09-13T01:52:36.557Z · last_confirmed_current_at=2026-09-13T11:35:00.166Z · rendered_at=2026-09-13T11:35:04.352Z · binds=cvp_core_sha256",
      "check_result": "PASS",
      "production_state": "CURRENT",
      "binding_current": true
    },
    "CVP-DIM-01": {
      "result": "PASS",
      "applicability": "applicable",
      "notes": "Power"
    },
    "CVP-PROP-01": {
      "result": "PASS",
      "applicability": "applicable",
      "notes": "2/2 property · enumerated fixed assertions (not generated; no seed)"
    },
    "CVP-META-01": {
      "result": "PASS",
      "applicability": "applicable",
      "notes": "4/4 metamorphic"
    },
    "CVP-ROUND-01": {
      "result": "PASS",
      "applicability": "applicable",
      "notes": "4/4 round-trips"
    },
    "CVP-XCAL-01": {
      "result": "SKIP",
      "applicability": "not_applicable",
      "notes": "No related calculator in the same formula family / no related-identity peers declared — control not in obligation set"
    },
    "CVP-IFACE-01": {
      "result": "PASS",
      "applicability": "applicable",
      "notes": "UI (SSR) · REST · MCP equivalent (MCP uses calc API handler). ui-ssr is query-result HTML, not a live browser session. Error-path engine·REST·MCP 5/5 (status, code, calculation_version). SSR compared on URL-canonical requested calculations; empty query is idle (not an error) and JSON-typed object/array inputs are REST/MCP-only. Public share URLs use UI alias `a` plus `mode`. Canonical Agent/API field is `value`; mode defaults to dbm-w."
    },
    "CVP-ORACLE-01": {
      "result": "SKIP",
      "applicability": "higher_assurance",
      "notes": "O2 present; O3 not required this wave"
    },
    "CVP-EXP-01": {
      "result": "SKIP",
      "applicability": "optional",
      "notes": "expert_reviewed=false"
    }
  },
  "tests": {
    "golden": {
      "passed": 6,
      "total": 6,
      "failed": 0,
      "case_ids": [
        "g-13dbm-w",
        "g-neg30dbm-w",
        "g-neg174dbm-w",
        "g-0p023w-dbm",
        "g-3dbm-mw",
        "g-1mw-dbm"
      ]
    },
    "boundary": {
      "passed": 8,
      "total": 8,
      "failed": 0,
      "case_ids": [
        "w-bad",
        "mw-bad",
        "missing",
        "mw-neg",
        "overflow",
        "underflow",
        "bnd-0dbm-w",
        "bnd-30dbm-w"
      ]
    },
    "invalid": {
      "passed": 14,
      "total": 14,
      "failed": 0,
      "case_ids": [
        "w-bad",
        "mw-bad",
        "bad-mode",
        "missing",
        "mw-neg",
        "overflow",
        "underflow",
        "inv-w-zero",
        "inv-mw-zero",
        "inv-mw-neg",
        "inv-mode",
        "inv-missing",
        "inv-overflow",
        "inv-underflow"
      ],
      "comparison": "exact_error_match",
      "records": [
        {
          "id": "inv-w-zero",
          "comparison": "exact_error_match",
          "expected": {
            "code": "VALUE_MUST_BE_POSITIVE"
          },
          "actual": {
            "code": "VALUE_MUST_BE_POSITIVE"
          },
          "match": true
        },
        {
          "id": "inv-mw-zero",
          "comparison": "exact_error_match",
          "expected": {
            "code": "VALUE_MUST_BE_POSITIVE"
          },
          "actual": {
            "code": "VALUE_MUST_BE_POSITIVE"
          },
          "match": true
        },
        {
          "id": "inv-mw-neg",
          "comparison": "exact_error_match",
          "expected": {
            "code": "VALUE_MUST_BE_POSITIVE"
          },
          "actual": {
            "code": "VALUE_MUST_BE_POSITIVE"
          },
          "match": true
        },
        {
          "id": "inv-mode",
          "comparison": "exact_error_match",
          "expected": {
            "code": "INVALID_MODE"
          },
          "actual": {
            "code": "INVALID_MODE"
          },
          "match": true
        },
        {
          "id": "inv-missing",
          "comparison": "exact_error_match",
          "expected": {
            "code": "MISSING_REQUIRED_INPUT"
          },
          "actual": {
            "code": "MISSING_REQUIRED_INPUT"
          },
          "match": true
        },
        {
          "id": "inv-overflow",
          "comparison": "exact_error_match",
          "expected": {
            "code": "NUMERIC_OVERFLOW"
          },
          "actual": {
            "code": "NUMERIC_OVERFLOW"
          },
          "match": true
        },
        {
          "id": "inv-underflow",
          "comparison": "exact_error_match",
          "expected": {
            "code": "NUMERIC_UNDERFLOW"
          },
          "actual": {
            "code": "NUMERIC_UNDERFLOW"
          },
          "match": true
        }
      ]
    },
    "property": {
      "passed": 2,
      "total": 2,
      "failed": 0,
      "case_ids": [
        "prop-0dbm-1mw",
        "prop-30dbm-1w"
      ],
      "kind": "fixed",
      "claim_scope": "Enumerated identities: 0 dBm = 1 mW; 30 dBm = 1 W; P(dBm+10)=10 P(dBm); P_mW=1000 P_W. Not generated/random property tests.",
      "definition_ids": [
        "0dbm-is-1mw",
        "30dbm-is-1w"
      ]
    },
    "round_trip": {
      "passed": 4,
      "total": 4,
      "failed": 0,
      "case_ids": [
        "rt-13dbm-w",
        "rt-neg30dbm-w",
        "rt-3dbm-mw",
        "rt-0p023w-dbm"
      ]
    },
    "metamorphic": {
      "passed": 4,
      "total": 4,
      "failed": 0,
      "case_ids": [
        "meta-plus10-dbm-w",
        "meta-plus10-dbm-mw",
        "meta-w-mw-scale",
        "meta-monotonic-dbm-w"
      ],
      "definition_ids": [
        "plus-10db-times-10",
        "mw-is-1000-w",
        "dbm-monotonic-power"
      ]
    },
    "contract": {
      "passed": 4,
      "total": 4,
      "failed": 0
    },
    "cross_interface": {
      "passed": 10,
      "total": 10,
      "failed": 0,
      "case_ids": [
        "iface-dbm-w",
        "iface-w-dbm",
        "iface-dbm-mw",
        "iface-mw-dbm",
        "iface-share-a-default-mode",
        "iface-err-w-zero",
        "iface-err-mw-neg",
        "iface-err-mode",
        "iface-err-overflow",
        "iface-err-underflow"
      ]
    }
  },
  "coverage": {
    "partitions": [
      {
        "id": "dbm-w",
        "description": "dBm → W",
        "exercised": true,
        "case_count": 16
      },
      {
        "id": "w-dbm",
        "description": "W → dBm",
        "exercised": true,
        "case_count": 4
      },
      {
        "id": "dbm-mw",
        "description": "dBm → mW",
        "exercised": true,
        "case_count": 5
      },
      {
        "id": "mw-dbm",
        "description": "mW → dBm",
        "exercised": true,
        "case_count": 2
      },
      {
        "id": "invalid-domain",
        "description": "Invalid inputs",
        "exercised": true,
        "case_count": 14
      }
    ]
  },
  "numerical": {
    "representation": "IEEE-754 binary64",
    "tolerance": {
      "type": "ulp",
      "value": 2,
      "rationale": "P_W=10^((dBm−30)/10); ≤2 ULP vs O2 on non-integer and negative dBm as well as decade anchors. Declared a priori.",
      "declared_before_evaluation": true
    },
    "max_error_observed": 0,
    "records": [
      {
        "id": "g-13dbm-w",
        "reference": 0.0199526231496888,
        "actual": 0.0199526231496888,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "golden"
      },
      {
        "id": "g-neg30dbm-w",
        "reference": 0.000001,
        "actual": 0.000001,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "golden"
      },
      {
        "id": "g-neg174dbm-w",
        "reference": 3.981071705534986e-21,
        "actual": 3.981071705534986e-21,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "golden"
      },
      {
        "id": "g-0p023w-dbm",
        "reference": 13.617278360175927,
        "actual": 13.617278360175927,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "golden"
      },
      {
        "id": "g-3dbm-mw",
        "reference": 1.9952623149688795,
        "actual": 1.9952623149688795,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "golden"
      },
      {
        "id": "g-1mw-dbm",
        "reference": 0,
        "actual": 0,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "golden"
      },
      {
        "id": "bnd-0dbm-w",
        "reference": 0.001,
        "actual": 0.001,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "boundary"
      },
      {
        "id": "bnd-30dbm-w",
        "reference": 1,
        "actual": 1,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "boundary"
      },
      {
        "id": "rt-13dbm-w",
        "reference": 0.0199526231496888,
        "actual": 0.0199526231496888,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "round-trip",
        "hops": {
          "forward": {
            "reference": 0.0199526231496888,
            "actual": 0.0199526231496888,
            "error_ulp": 0
          },
          "reverse": {
            "reference": 13,
            "actual": 13,
            "error_ulp": 0
          }
        }
      },
      {
        "id": "rt-neg30dbm-w",
        "reference": 0.000001,
        "actual": 0.000001,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "round-trip",
        "hops": {
          "forward": {
            "reference": 0.000001,
            "actual": 0.000001,
            "error_ulp": 0
          },
          "reverse": {
            "reference": -30,
            "actual": -30,
            "error_ulp": 0
          }
        }
      },
      {
        "id": "rt-3dbm-mw",
        "reference": 1.9952623149688795,
        "actual": 1.9952623149688795,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "round-trip",
        "hops": {
          "forward": {
            "reference": 1.9952623149688795,
            "actual": 1.9952623149688795,
            "error_ulp": 0
          },
          "reverse": {
            "reference": 2.999999999999999,
            "actual": 2.999999999999999,
            "error_ulp": 0
          }
        }
      },
      {
        "id": "rt-0p023w-dbm",
        "reference": 13.617278360175927,
        "actual": 13.617278360175927,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "round-trip",
        "hops": {
          "forward": {
            "reference": 13.617278360175927,
            "actual": 13.617278360175927,
            "error_ulp": 0
          },
          "reverse": {
            "reference": 0.022999999999999986,
            "actual": 0.022999999999999986,
            "error_ulp": 0
          }
        }
      },
      {
        "id": "meta-plus10-dbm-w",
        "reference": 10.000000000000005,
        "actual": 10.000000000000005,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "metamorphic",
        "hops": {
          "base": {
            "reference": 0.001995262314968879,
            "actual": 0.001995262314968879,
            "error_ulp": 0
          },
          "follow": {
            "reference": 0.0199526231496888,
            "actual": 0.0199526231496888,
            "error_ulp": 0
          },
          "relation": {
            "reference": 10.000000000000005,
            "actual": 10.000000000000005,
            "error_ulp": 0
          }
        }
      },
      {
        "id": "meta-plus10-dbm-mw",
        "reference": 10,
        "actual": 10,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "metamorphic",
        "hops": {
          "base": {
            "reference": 0.01,
            "actual": 0.01,
            "error_ulp": 0
          },
          "follow": {
            "reference": 0.1,
            "actual": 0.1,
            "error_ulp": 0
          },
          "relation": {
            "reference": 10,
            "actual": 10,
            "error_ulp": 0
          }
        }
      },
      {
        "id": "meta-w-mw-scale",
        "reference": 999.9999999999999,
        "actual": 999.9999999999999,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "metamorphic",
        "hops": {
          "base": {
            "reference": 0.0199526231496888,
            "actual": 0.0199526231496888,
            "error_ulp": 0
          },
          "follow": {
            "reference": 19.952623149688797,
            "actual": 19.952623149688797,
            "error_ulp": 0
          },
          "relation": {
            "reference": 999.9999999999999,
            "actual": 999.9999999999999,
            "error_ulp": 0
          }
        }
      },
      {
        "id": "meta-monotonic-dbm-w",
        "reference": 1,
        "actual": 1,
        "error_ulp": 0,
        "threshold_ulp": 2,
        "suite": "metamorphic",
        "hops": {
          "base": {
            "reference": 0.000001,
            "actual": 0.000001,
            "error_ulp": 0
          },
          "follow": {
            "reference": 0.001,
            "actual": 0.001,
            "error_ulp": 0
          },
          "relation": {
            "reference": 1,
            "actual": 1,
            "error_ulp": 0
          }
        }
      }
    ]
  },
  "interfaces": {
    "compared": [
      "ui-ssr",
      "rest",
      "mcp"
    ],
    "result": "PASS",
    "notes": "UI (SSR) · REST · MCP equivalent (MCP uses calc API handler). ui-ssr is query-result HTML, not a live browser session. Error-path engine·REST·MCP 5/5 (status, code, calculation_version). SSR compared on URL-canonical requested calculations; empty query is idle (not an error) and JSON-typed object/array inputs are REST/MCP-only. Public share URLs use UI alias `a` plus `mode`. Canonical Agent/API field is `value`; mode defaults to dbm-w."
  },
  "artifacts": {
    "evidence_bundle_sha256": "95d7b4ddf488ba78a481256cd2406381113dfb981ba02f88837190503f081199",
    "evidence_digest": "250f2cc954009c8db006eaca1aeed4c07ce18a4b2a85e658a7207baad77c70ea",
    "production_sha256": "d8679f20af3506f0d939fc41f759265265a940cac3effc1332876304e1ad2bc0",
    "attested_catalog_sha256": "dfd311ad9f2e37be7af2a29197a84f33944dff9549828dd83635a5da35985df4",
    "production_checks": [
      {
        "id": "units.rf.dbm_watts:output-const",
        "status": "pass",
        "detail": "output const 1.3.1 vs capability 1.3.1",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z"
      },
      {
        "id": "units.rf.dbm_watts:evidence-sha256",
        "status": "pass",
        "detail": "ad3b27522882",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z"
      },
      {
        "id": "units.rf.dbm_watts:semantic-contract",
        "status": "pass",
        "detail": "22/22",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z"
      },
      {
        "id": "units.rf.dbm_watts:capability-html-public-origin-agree",
        "status": "pass",
        "detail": "public 1.3.1 vs origin 1.3.1",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z"
      },
      {
        "id": "units.rf.dbm_watts:cvp-manifest-public-origin-agree",
        "status": "pass",
        "detail": "units.rf.dbm_watts/1.3.1/2026-09-13.overflow-ssr-rollout/engineering/250f2cc95400",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z",
        "projection_compared": false
      },
      {
        "id": "units.rf.dbm_watts:cvp-latest-alias-agrees",
        "status": "pass",
        "detail": "units.rf.dbm_watts/1.3.1/2026-09-13.overflow-ssr-rollout/engineering/250f2cc95400",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z",
        "projection_compared": false
      },
      {
        "id": "units.rf.dbm_watts:cvp-immutable-manifest-fetch",
        "status": "pass",
        "detail": "public=200 origin=200",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z"
      },
      {
        "id": "units.rf.dbm_watts:cvp-immutable-manifest-sha256",
        "status": "pass",
        "detail": "250f2cc95400",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z"
      },
      {
        "id": "units.rf.dbm_watts:cvp-latest-alias-matches-immutable",
        "status": "pass",
        "detail": "units.rf.dbm_watts/1.3.1/2026-09-13.overflow-ssr-rollout/engineering/250f2cc95400",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z",
        "projection_compared": false
      },
      {
        "id": "units.rf.dbm_watts:calculator-html-cvp-projection",
        "status": "pass",
        "detail": "matches Trust display",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z"
      },
      {
        "id": "units.rf.dbm_watts:evidence-html-cvp-projection",
        "status": "pass",
        "detail": "matches Trust display",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-09-13T01:52:36.557Z"
      }
    ],
    "digest_registry": {
      "digest_algorithm": "sha256",
      "canonicalization": "json-sorted-keys-utf8",
      "entries": [
        {
          "name": "cvp_core_sha256",
          "field": "artifacts.cvp_core_sha256",
          "digest_scope": "cvp_verification_fingerprint_v2",
          "value": "250f2cc954009c8db006eaca1aeed4c07ce18a4b2a85e658a7207baad77c70ea",
          "note": "Immutable verification core; excludes attestation/live-status and Evidence contract counts"
        },
        {
          "name": "cvp_evidence_digest",
          "field": "artifacts.evidence_digest",
          "digest_scope": "cvp_verification_fingerprint_v2",
          "value": "250f2cc954009c8db006eaca1aeed4c07ce18a4b2a85e658a7207baad77c70ea",
          "note": "Alias of cvp_core_sha256 (historical field name)"
        },
        {
          "name": "artifact_evidence_sha256",
          "field": "release_integrity.digests.evidence_core_sha256",
          "digest_scope": "evidence_artifact_core",
          "value": "ad3b27522882ca4ecdfafc8c688a9d499b956edb85fc166761d79d6a1f7dd336",
          "note": "Published Evidence JSON core — Trust freshness / production bind subject"
        },
        {
          "name": "evidence_catalog_digest",
          "field": "artifacts.attested_catalog_sha256",
          "digest_scope": "capability_catalog",
          "value": "dfd311ad9f2e37be7af2a29197a84f33944dff9549828dd83635a5da35985df4",
          "note": "Capability catalog integrity; site-wide, not per-suite fingerprint"
        }
      ]
    },
    "cvp_core_sha256": "250f2cc954009c8db006eaca1aeed4c07ce18a4b2a85e658a7207baad77c70ea"
  },
  "dependencies": [
    {
      "name": "dbm-watt-engine",
      "version": "1.3.1"
    },
    {
      "name": "dbm-watt-reference-oracle",
      "version": "1.0.0"
    },
    {
      "name": "node",
      "version": "22.23.2"
    }
  ],
  "attestation": {
    "status": "CURRENT",
    "href": "/.well-known/calculatorx-production-attestation.json",
    "id": "c4df4bb073bf87955dccfbc9399f558b5ac157599dcc2ffa7f03224ca402fd8f",
    "attested_at": "2026-09-13T01:52:36.557Z",
    "last_confirmed_current_at": "2026-09-13T11:35:00.166Z",
    "site_attestation_current": false,
    "capability_attestation_current": true,
    "bound_snapshot_status": "pass",
    "live_report_status": "stale",
    "bound_attested_at": "2026-09-13T11:35:00.166Z",
    "live_updated_at": "2026-09-13T11:35:04.309Z",
    "bound_snapshot": {
      "status": "pass",
      "attested_at": "2026-09-13T11:35:00.166Z",
      "site_stale_count": 1
    },
    "live_site_status": {
      "href": "/.well-known/calculatorx-production-attestation.json"
    },
    "bound_snapshot_site_stale_count": 1,
    "site_stale_capability_count": 1,
    "evidence_attested_at": "2026-09-13T01:52:36.557Z"
  },
  "domain_review": {
    "status": "ABSENT",
    "spec_version": "1.3.1",
    "external_third_party": false
  },
  "internal_review": {
    "status": "PASS",
    "reviewer_role": "electrical-engineer",
    "reviewed_by": "CalculatorX electrical review",
    "spec_version": "1.3.1",
    "independence": "internal",
    "external_third_party": false
  },
  "timestamps": {
    "verified_at": "2026-09-13T01:52:36.557Z",
    "generated_at": "2026-09-13T01:52:36.557Z",
    "rendered_at": "2026-09-13T11:35:04.352Z",
    "notes": "verified_at/generated_at mark the first publication of this cvp_core_sha256 (artifacts.evidence_digest alias) for suite verification. evidence_attested_at/attested_at is the first production bind of that core digest. last_confirmed_current_at is the latest site-wide report that still confirms CURRENT. rendered_at is this JSON serialization and is not part of cvp_core_sha256 / evidence_digest. Production attestation binds cvp_core_sha256 (binds evidence_digest). Causal order: verified_at ≤ evidence_attested_at ≤ last_confirmed_current_at. attestation.bound_snapshot.site_stale_count is the site-wide stale capability count at Manifest bind time — not a live value. Fetch attestation.live_site_status.href for the current site report."
  },
  "links": {
    "legacy_evidence": "https://www.calculatorx.com/evidence/units.rf.dbm_watts/1.3.1.json",
    "evidence_page": "https://www.calculatorx.com/evidence/units.rf.dbm_watts/1.3.1",
    "calculator": "https://www.calculatorx.com/calc/electric/dbm-watt",
    "schema": "https://www.calculatorx.com/developers/cvp/schema/cvp-evidence-1.0.json",
    "protocol": "https://www.calculatorx.com/developers/cvp/spec/1.0",
    "manifest": "https://www.calculatorx.com/evidence/units.rf.dbm_watts/1.3.1.cvp.json",
    "manifest_immutable": "https://www.calculatorx.com/evidence/units.rf.dbm_watts/1.3.1/2026-09-13.overflow-ssr-rollout.cvp.json",
    "manifest_core": "https://www.calculatorx.com/evidence/units.rf.dbm_watts/1.3.1/2026-09-13.overflow-ssr-rollout.250f2cc95400.cvp.json"
  }
}